Harness lever for looms



(No Model.) 1

G. P. HUTCHINS.

HARNESS LEVER FOR LOOMS.

'No. 453,802. Patented June 2,1891.

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UNITED STATES PATENT OFFICE.

GEORGE E. HUTOHINS, OF WORCESTER, MASSACHUSETTS, ASSIGNOR TO THE KNOWLESLOOM WORKS, OF SAME PLACE.

HARNESS-LEVER FOR Lo oMs.

SPECIFICATION forming part of Letters Patent No. 453,302, dated June 2,1891.

Application filed October 25, 1890- Serial No. 369,299. (No model.)

To all whom it may concern.-

Be it known that I, GEORGE F. HUTOHINS, a citizen of the United States,residing at WVorcester, in the county of Vorcester and State ofMassachusetts, have invented certain new and useful Improvements inHarness-Levers for Looms; and I do hereby declare that the following isa full, clear, and

exact description of the invention, which, in connection with thedrawing making a part,

of this specification, will enable others skilled in the art to which myinvention belongs to make and use the same.

My invention relates to looms, and more particularly to theharness-motion in that class of looms in which the harnesses are raisedand lowered by a set of upright jacks or levers operated by acorresponding set of cams.

The object of my invention is to obtain a harness-lever that will givegreater variation of shed between the two extreme notches, and I obtainthis result by making my harness-lever in three parts and operating thesame in the manner to be hereinafter fully described.

My invention consists in certain novel fea-.

tures of construction and operation of the harness-levers of a loom ofthe class above referred to, as will be hereinafter fully described.

The drawing represents a front elevation of a portion of a loom withmyimproven ents applied thereto.

I have only shown in the drawing suftlcient parts of a loom with myinvention applied thereto to clearly illustrate the nature of myinvention and the operation thereof.

In the accompanying drawing, the numeral 1 represents the loom-sides,and 2 the arches of ordinary construction, and 3 is a cam operating aharness-lever and supported on a shaft 3' and driven in the direction ofthe arrow. In the groove 4 in said cam runs a pin 5 on the lower end ofthe lever 6, pivoted at 7 on a bracket 7 on the loom-side. The upper endof the lever 6 is provided with the segment-gear 8,which meshes with thesegment-gear 9 on the lower end of the lever 10, pivoted at 11 on thebracket 11 on the loomside. From the upper end of the lever 10 extendthe cords 12 in the ordinary way, passing over pulleys 13 and secured tothe upper side of the harness-frame 14. Upon the lever 6, below itspivot-point 7, is a segmentgear 15, in this instance formed on the endof an arm 6, projecting out from the lever 6. Said segment-gear l5meshes with segmentgear 16 on the upper end of the lever 17, pivoted at18 on bracket 18 on the loomside. From the lower end of the lever 17extends the cord 19, passing over the pulley 21 to the lower side of theharness-frame 14.

From the above,in connectionwith the drawing, it will be seen that theharness-lever is made in three parts, each part supported on a separatepivot-point, and the parts connected together by segment-gears. Therevolution of the cam 3 will cause the lever 6 to move in and outon itspivot-point, and through the segment-gears 8 and 9 will cause theleverlO to be moved in and out on its pivot point, and through thesegment-gears l5 and 16 Will cause the lever 17 to be moved in and outon its pivot-point, according to the conformation of the cam 3. As thelevers l0 and 17 are moved in opposite directions by the intermediatelever 6, the harnesses connected with said levers by the cords 12 and 19will be moved up and down in the usual manner.

By dividing the harness-lever into three separate levers and connectingthem together and operating them, as above described, it is obvious thatthere is a much greater variation of shed between the twoextreme notches20 of lever 10 than there would be if said lever were moved from thepivot-point of the intermediary lever 6 instead of its own pivotpoint.The same is true of the lower lever 17 It will be understood that thereis an oper-' ating-cam and a set of levers like those shown in thedrawing for each harness-frame.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. In a loom, the combination, with a harness and connections to aharness-lever, of a harness-lever made in three parts, consisting of anintermediary lever and a lever above and a lever below said intermediarylever, said levers having segments of gears 011 their contiguous ends,substantially as set forth.

2. In a loom, the combination, with a harness and connections to aharness-lever, of a harness-lever made in three parts and consisting ofan intermediary lever provided with 7 two segments of gears and operatedby a cam,

and said cam and two levers, one above and

